<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <link rel="stylesheet" href="./calculator.css">
    <script src="./calculator.js" type="text/javascript" defer="defer"></script>
</head>
<body>
    <div class="panel">
        <div class="box">
            <div class="ac_sum">
                <input type="button" value="C" id="clean">
            </div>
            <div class="r1r2c2c5"></div>
            <!-- <div></div>
            <div></div> -->
            <div>
                <input type="button" value="7" id="seven">
            </div>
            <div>
                <input type="button" value="8" id="eight">
            </div>
            <div>
                <input type="button" value="9" id="nine">
            </div>
            <div class="opretion_bgc">
                <input type="button" value="+" id="add">
            </div>
            <div>
                <input type="button" value="4" id="four">
            </div>
            <div>
                <input type="button" value="5" id="five">
            </div>
            <div>
                <input type="button" value="6" id="six">
            </div>
            <div class="opretion_bgc">
                <input type="button" value="*" id="mulit">
            </div>
            <div>
                <input type="button" value="1" id="one">
            </div>
            <div>
                <input type="button" value="2" id="two">
            </div>
            <div>
                <input type="button" value="3" id="three">
            </div>
            <div class="opretion_bgc">
                <input type="button" value="-" id="diff">
            </div>
            <div>
                <input type="button" value="0" id="zero">
            </div>
            <div class="opretion_bgc">
                <input type="button" value="." id="decimal">
            </div>
            <div class="opretion_bgc">
                <input type="button" value="/" id="except">
            </div>
            <div class="ac_sum">
                <input type="button" value="=" id="sum">
            </div>
        </div>
    </div>
</body>
</html>